I am assuming that you are interested in 'viewing' your sequence after the sequence builder tool generates and saves it? Unfortunately methods such as 'getsequencefile' will not create a new window inside of the Sequence Editor with which to view the code, they are intended as a programmatic way of getting handles to the desired objects. If you wish to run the new file, Engine.NewExecution will take the new pathname and GetSequenceFile will allow you to access the file's properties, but otherwise you will need to go to File>>Open to display the sequence.
